2559961 has 4 divisors (see below), whose sum is σ = 2565072. Its totient is φ = 2554852.

The previous prime is 2559959. The next prime is 2559983. The reversal of 2559961 is 1699552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2559961 - 2¹ = 2559959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2559961.

It is not an unprimeable number, because it can be changed into a prime (2559901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711 + ... + 2836.

It is an arithmetic number, because the mean of its divisors is an integer number (641268).

2^2559961 is an apocalyptic number.

It is an amenable number.

2559961 is a deficient number, since it is larger than the sum of its proper divisors (5111).

2559961 is an equidigital number, since it uses as much as digits as its factorization.

2559961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110.

The product of its digits is 24300, while the sum is 37.

The square root of 2559961 is about 1599.9878124536. The cubic root of 2559961 is about 136.7973810529.

The spelling of 2559961 in words is "two million, five hundred fifty-nine thousand, nine hundred sixty-one".